液体衰减反转恢复序列在腹部及盆腔疾病应用价值的探讨  

Magnetic resonance imaging of abdominal and pelvis diseases with a fluid-attenuated inversion recovery sequence

作　　者：刘建军[1] 臧建华[1] 王新疆[1] 付明华[1] 王鑫[1] 白玲[1] 

机构地区：[1]兰州军区乌鲁木齐总医院医学影像科,新疆乌鲁木齐830000

出　　处：《西北国防医学杂志》2007年第1期38-40,共3页Medical Journal of National Defending Forces in Northwest China

摘　　要：目的:探讨液体衰减反转恢复(fluid-attenuated inversion recovery,FLAIR)序列与其他序列搭配在腹部疾患应用的临床价值,并初步评价其适用范围。方法:对90例患者共226个病灶进行定性,按常规扫描方法加上FLAIR序列进行检查,之后根据需要按照下列步骤进行扫描:①行质子像(PDW);②多回波成像;③仅有46例患者行静脉注射Gd—DTPA增强扫描。结果:所有病灶应用FLAIR后T2W均有变化;85例为降低,仅5例升高,经FLAIR后病灶依信号强度分为高、等、低3种。分别为23个(10.2%);65个(28.8%);138个(61.1%)。有175个病灶FLAIR明确诊断,占77.4%,22个行质子像,多回波成像定性。46例经增强扫描确定性质。低信号病灶均为囊性病变或液体,等信号病灶均为良性病变,增强前后应用FLAIR测量的T2值具有统计学意义。结论:在结果判定上以低信号组病例最具有诊断意义。等信号组均为良性病变。高信号组解释较为复杂。Objective： To evaluate the application value of fluid -attenuated inversion recovery （FLAIR） sequence combined with other sequences for demonstrating abdominal and pelvic lesions. Methods： Ninety patients with 226 lesions underwent MR scans with both conventional and FLAIR sequences, and other sequences such as proton density weighted （PDW） and multi - echo （ME） were performed in 40 patients. Results： The signals of all cases altered on FLAIR sequence. The signal intensity was classified into 3 degrees. Hyperintensity, isointensity and hypointensity were presented in 23 lesions （10.2%）, 65 lesions （28.8%） and 138 lesions （61.1%） respectively. Conclusion： As the diagnostic value of FLAIR is concerned, hypointensity on FLAIR has the definite value for cystic disease and liquid, isointensity on FLAIR may imply benign lesion, and hyperintensity is difficult to explain

关 键 词：磁共振成像 FLAIR 囊肿 

分 类 号：R445.2[医药卫生—影像医学与核医学]